GMT to AST Time Converter

When it's 12:00 PM GMT, it's 8:00 AM AST 4 hours behind

Convert Time

GMT (Greenwich Mean Time)
--:--:--
AST (Atlantic Standard Time)
--:--:--
= -- AST
Time in GMTTime in AST
12:00 AM8:00 PM (-1 day)
1:00 AM9:00 PM (-1 day)
2:00 AM10:00 PM (-1 day)
3:00 AM11:00 PM (-1 day)
4:00 AM12:00 AM
5:00 AM1:00 AM
6:00 AM2:00 AM
7:00 AM3:00 AM
8:00 AM4:00 AM
9:00 AM5:00 AM
10:00 AM6:00 AM
11:00 AM7:00 AM
12:00 PM8:00 AM
1:00 PM9:00 AM
2:00 PM10:00 AM
3:00 PM11:00 AM
4:00 PM12:00 PM
5:00 PM1:00 PM
6:00 PM2:00 PM
7:00 PM3:00 PM
8:00 PM4:00 PM
9:00 PM5:00 PM
10:00 PM6:00 PM
11:00 PM7:00 PM

Daylight Saving Time (DST) may affect this conversion. GMT observes DST. AST does not observe DST.

Major Cities in GMT (Greenwich Mean Time)

Major Cities in AST (Atlantic Standard Time)

  • Halifax
  • Dartmouth
  • Lower Sackville
  • Charlottetown
  • Downtown Halifax
What is the time difference between GMT and AST?

AST is 4 hours behind compared to GMT. When it's 12:00 PM (noon) in GMT, it's 8:00 AM in AST.

Does Daylight Saving Time (DST) affect GMT to AST conversion?

GMT observes DST. AST does not observe DST. During DST transitions, the time difference may change by one hour.

What major cities use GMT (Greenwich Mean Time)?

Major cities in the GMT timezone include London, Birmingham, Glasgow, Manchester, Sheffield.

What is the best time to call from GMT to AST?

The best time to call from GMT to AST is between 9:00 AM and 5:00 PM GMT, which is 5:00 AM to 1:00 PM AST. This ensures both parties are available during normal business hours (9 AM - 5 PM).